Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dbeee68af5cbf45…

MALICIOUS

PDF

53.7 KB Created: 2021-06-03 05:51:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1f3324927efe09bae98e247c1d7d383b SHA-1: 4006cbf3195b9690dcaff7236bb3cfc7e9198be0 SHA-256: 4dbeee68af5cbf4520c5ae5fbc73d9a2fe4c702174b334c7bc4c18ae0943b9d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.online/app/431946152/free-robux-gift-card-codes-2021-game-hack. The document body and embedded links suggest a social engineering tactic to entice users into clicking through to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9517

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/431946152/free-robux-gift-card-codes-2021-game-hack In PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/i-want-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/freerubux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52CB 28736 bytes
SHA-256: 74f0bb01bbb34c92d1f9ec5502c60d0ec1a7b88e3bf9cac8d13d92b560b7a4aa
font_01_sfnt_off000094d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D1 3124 bytes
SHA-256: 94915f774c7f95ef0299f7bd8c8a10e84b1a1c84e90e7c908a3e5ae39ad5a9f7
font_02_sfnt_off00009fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA8 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000acba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACBA 19044 bytes
SHA-256: a83203ba6d4d8e4db234da74518c811315008a13a6a61ff598d06d89853e7c2b

Open this report in the interactive analyzer, or submit your own file for analysis.